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ptc-61058381-Visitor
1-Visitor
May 28, 2014
Question

Matrix Problems. Mathcad only show two little black boxes.

  • May 28, 2014
  • 8 replies
  • 3280 views

Hi,

I have trouble with mathcad 14 because it doesn't solve a Matrix. I want to work with a 10x45 matrix and mathcad do nothing. When I try to traspose the 10x45 matrix, mathcad just show "=" and two little black boxes. However when I create, for example, a 5x4 matrix, in that case mathcad does solve it.

Maybe some of you have had the same porblem and could help me. Thanks

8 replies

Werner_E
Werner_E25-Diamond I
25-Diamond I
May 28, 2014

Maybe a bug which was fixed in the meantime.

Your sheet works OK when opened with the current Mathcad 15 M030

What happens if you define a variable A:=U[transposed] and then use A=

You have turned on automatic calculation?!

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ptc-61058381-VisitorAuthor
1-Visitor
May 28, 2014

If I define A:=U(transposed), and the A=, mathcad shows the same two little boxes. I took a screenshot of that.

The automatic calcutalion was in fact turned on. I turned it off and now mathcad only shows one on the little boxes, but doesnt transpone the matrix. Its as if there weren't a matrix defined with "U".

I am new in Mathcad and maybe i turned on or turned off something accidentally, because I also have mathcad in a desktop computer and there works perfectly, but I need the laptop for the University.

Screen+Shot+2014-05-28+at+10.15.09+AM.png

Werner_E
Werner_E25-Diamond I
25-Diamond I
May 28, 2014

Automatic calculation should normally be turned ON, thats OK as it was. I was asking as if you turn autocalc OFF the behaviour you experience would be explainable - Mathcad simply would not calculate the transposed Matrix.

I can't think of any other switch to turn on or off which would cause the missing evaluation, so as I already wrote it may be a bug which was fixed in the meantime. Which version/maintanance release of MC14 are you using? Any chance on upgrading?

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